21 Start/Stop - ABB ACS355 User Manual

218 Actual signals and parameters
All parameters
No. Name/Value
2021 MAX SPEED
SEL
PAR 2002
EXT REF 1

21 START/STOP

2101 START
FUNCTION
AUTO
DC MAGN
Description
Maximum speed source for torque control
Value of parameter 2002 MAXIMUM SPEED
Value of signal 0111 EXTERNAL REF 1
Start and stop modes of the motor
Selects the motor starting method.
The drive starts the motor instantly from zero frequency if
parameter 9904 MOTOR CTRL MODE
FREQ. If flying start is required use selection
If parameter 9904 MOTOR CTRL MODE
SPEED or VECTOR:
motor with DC current before the start. The pre-magnetizing
time is defined by parameter
selection DC MAGN.
For permanent magnet motors, flying start is used if the
motor is rotating.
The drive pre-magnetizes the motor with DC current before
the start. The pre-magnetizing time is defined by parameter
2103 DC MAGN TIME.
If parameter 9904 MOTOR CTRL MODE
SPEED or VECTOR:
the highest possible break-away torque when the pre-
magnetizing is set long enough.
Note: Starting the drive connected to a rotating motor is not
possible when DC MAGN
magnet motor is used, alarm
generated.
WARNING! The drive will start after the set pre-
magnetizing time has passed even if the motor
magnetization is not completed. In applications where a full
break-away torque is essential, always ensure that the
constant magnetizing time is long enough to allow
generation of full magnetization and torque.
setting is
value is
TORQ, the drive pre-magnetizes the
2103 DC MAGN
value is
TORQ, DC magnetizing guarantees
is selected. When a permanent
MOTOR BACK EMF
Def/FbEq
PAR 2002
0
1
AUTO
1
SCALAR:
SCAN START.
VECTOR:
TIME. See
2
VECTOR:
(2029) is